创建表单集时出错 - 该选项不是可用选项之一

Question

我有一个模式Map1有2个字段，我试图使用这个Map1初始化formset。当我初始化名称和位置时，它没有初始化，它要求id值但是当给出id值时我得到以下错误。

class Map1(models.Model):
    name = models.CharField(max_length=128)
    position = ArrayField(models.IntegerField(), size=2)

    class Meta:
        unique_together = (('name', 'position'))      



modelformset = modelformset_factory(Map1, fields=('name', 'position')) 
>>> data = {
...          'form-TOTAL_FORMS': '1',  # the number of forms rendered
...          'form-INITIAL_FORMS': '1',  # the number of forms with initial data
...          'form-MAX_NUM_FORMS': '',  # the max number of forms
...          'form-0-id': 1,
...          'form-0-name': 'germantown',
...          'form-0-position': '10,20',
...          }
>>> formset = modelformset(data=data)
>>> formset.errors
[{'id': ['Select a valid choice. That choice is not one of the available choices.']}]

如果我删除了form-id，我会收到此错误 -

>>> data = {
...          'form-TOTAL_FORMS': '1',  # the number of forms rendered
...          'form-INITIAL_FORMS': '1',  # the number of forms with initial data
...          'form-MAX_NUM_FORMS': '',  # the max number of forms
...          
...          'form-0-name': 'germantown',
...          'form-0-position': '10,20',
...          }
>>> formset = modelformset(data=data)
>>> formset.errors
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/Users/premanandlakshmanan/Documents/django-contribute/django/django/forms/formsets.py", line 295, in errors
    self.full_clean()
  File "/Users/premanandlakshmanan/Documents/django-contribute/django/django/forms/formsets.py", line 343, in full_clean
    form = self.forms[i]
  File "/Users/premanandlakshmanan/Documents/django-contribute/django/django/utils/functional.py", line 35, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "/Users/premanandlakshmanan/Documents/django-contribute/django/django/forms/formsets.py", line 144, in forms
    for i in range(self.total_form_count())]
  File "/Users/premanandlakshmanan/Documents/django-contribute/django/django/forms/formsets.py", line 144, in <listcomp>
    for i in range(self.total_form_count())]
  File "/Users/premanandlakshmanan/Documents/django-contribute/django/django/forms/models.py", line 588, in _construct_form
    pk = self.data[pk_key]
KeyError: 'form-0-id'